If you shave in the morning, the hairs will likely have grown back by afternoon. The beard is short, you can not see the hairs, but it is like a beard-shaped shadow on your face, this is known as an afternoon shadow.
Guy 1: It is so irritating, I shaved this morning, and now my beard is back!
Guy 2: Yeah, there is no escaping the afternoon shadow.
Guy 2: Yeah, there is no escaping the afternoon shadow.
by Chris-André October 2, 2006